<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>商品分类</el-breadcrumb-item>
          
          </el-breadcrumb>

          <!-- 卡牌视图 -->
          <el-card>
              <el-row>
                  <el-col>
                      <el-button type="primary" @click="showAddCate">添加分类</el-button>
                  </el-col>
              </el-row>
              <!-- 表格 -->
                 <tree-table class="treetable" :data="cateList" :columns="columns" :selection-type="false" :expand-type="false" show-index border :show-row-hover="false">
                     <template slot='isok' slot-scope="scope">
                          
                        <i class="el-icon-success" v-if="scope.row.cat_deleted===false" style="color: lightgreen;"></i>
                        <i class="el-icon-error" v-else style="color: red;"></i>
                     </template>

                     <template slot="sort" slot-scope="scope">
                          <el-tag v-if="scope.row.cat_level===0">一级</el-tag>
                          <el-tag type="success" v-else-if="scope.row.cat_level===1">二级</el-tag>
                          <el-tag type="warning" v-else>三级</el-tag>
                     </template>
                        

                     <template slot="opt" slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini">删除</el-button>
                     </template>
                 </tree-table>

              <!-- 分页 -->
              <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="querInfo.pagenum"
      :page-sizes="[3, 5, 10, 15]"
      :page-size="querInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
    </el-pagination>
          </el-card>
<!-- 添加对话框 -->
          <el-dialog
  title="添加分类"
  :visible.sync="addCateVisible"
  width="30%" @close="addCateClosed"
   >
   <!-- 添加分类表单 -->
   <el-form :model="addCateForm" :rules="addCateRules" ref="addCateRef" label-width="100px" class="demo-ruleForm"  >
    <el-form-item label="分类名称" prop="cat_name">
      <el-input v-model="addCateForm.cat_name"></el-input>
    </el-form-item>
    <el-form-item label="父级名称"  >
        <!-- 级联选择器 -->
        <el-cascader
    v-model="selectedKeys"
    expand-trigger="hover"
    :options="parentCateList"
    :props="cateProps"
    @change="parentCatechange" clearable change-on-select
  
     ></el-cascader>
      </el-form-item>
    </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="addCateVisible = false">取 消</el-button>
    <el-button type="primary" @click="addCate">确 定</el-button>
  </span>
</el-dialog>
    </div>
</template>
<script>
export default {
    data() {
        return {
            cateList:[],
            querInfo:{
                type:3,
                pagenum:1,
                pagesize:5
            },
            total:0,
            columns:[
                {
                    label:'分类名称',
                    prop:'cat_name'
                },
                {
                    label:'是否有效',
                    type:'template',
                    template:'isok'

                },
                {
                    label:'排序',
                    type:'template',
                    template:'sort'

                },
                {
                    label:'操作',
                    type:'template',
                    template:'opt'

                }
            ],
            addCateVisible:false,
            addCateForm:{
                // 添加分类名称
                cat_name:'',
                cat_pid:0,
                cat_level:0

            },
            addCateRules:{
                cat_name:[
                { required: true, message: '请输入分类名称', trigger: 'blur' },
            { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ]
            },
            parentCateList:[],
            // 指定级联选择器配对
            cateProps:{
                value:'cat_id',
                label:'cat_name',
                children:'children'
            },
            selectedKeys:[]


        }
    },
    created() {
        this.getCateList()
    },
    methods: {
        // 获取
      async  getCateList(){
         const {data:res} =await this.$http.get('categories',{params:this.querInfo})
         if(res.meta.status!==200){
             return this.$message.error('获取商品分类失败')
         }

         this.cateList=res.data.result
         this.total=res.data.total
         console.log(this.cateList)
        },
        handleSizeChange(newSize){
          this.querInfo.pagesize=newSize
          this.getCateList()
    },
    handleCurrentChange(newPage){
            this.querInfo.pagenum=newPage
            this.getCateList()
    },
    // 添加分类
    showAddCate(){
        // 获取父级分类
        this.getParentCateList()
        this.addCateVisible=true
    },
   async getParentCateList(){
    const{data:res} = await  this.$http.get('categories',{params:{type:2}})
    if(res.meta.status!==200){
             return this.$message.error('获取父级分类失败')
         }

         this.parentCateList=res.data
         console.log(this.parentCateList)

    },
    parentCatechange(){
        console.log(this.selectedKeys)
        if(this.selectedKeys.length>0){
         this.addCateForm.cat_pid =  this.selectedKeys[this.selectedKeys.length-1]
         this.addCateForm.cat_level=this.selectedKeys.length
         return
        }else{
            this.addCateForm.cat_pid=0
            this.addCateForm.cat_level=0
        }
    },
    addCate(){
        console.log(this.addCateForm)
        this.$refs.addCateRef.validate(async valid=>{
            if(!valid) return
          const{data:res} = await this.$http.post('categories',this.addCateForm)
          if(res.meta.status!==201){
             return this.$message.error('添加分类失败')
         }
         this.$message.success('添加分类成功')
         this.getCateList()
         this.addCateVisible=false
        })
    },
    addCateClosed(){
       this.$refs.addCateRef.resetFields()
       this.selectedKeys=[]
       this.addCateForm.cat_level=0
       this.addCateForm.cat_pid=0
    }

    }

   
}
</script>
<style lang="less" scoped>
.treetable{
    margin-top: 15px;
}
.el-cascader{
    width: 100%;
}
</style>